References
- Berkson G., Landesman-Dwyer S. Behavioural research on severe and profound Mental Retardation. American Journal of Mental Deficiency 1977; 81: 428–454
- Brunner J. Acts of meaning. Harvard University Press, Cambridge, Ma 1990
- Deising P. Patterns of discovery in the social sciences. Aldine Atherton, New York 1971
- Erickson F. The nature of clinical evidence. Evidence and Inference, Lerner D.. Free Press, Glencoe, Ill 1958, In
- Gleason J.J. Special education in context: An ethnographic study of persons with developmental disabilities. Cambridge University Press, CambridgeEngland 1989
- Gleason J.J. Meaning of play: Interpreting patterns in behaviour of persons with severe developmental disabilities. Anthropology and Education Quarterly 1990a; 21: 59–77
- Gleason J.J. Underlying meaning in the behaviour of persons with severe and profound mental retardation and multiple handicaps: Implications for clinical intervention. Motor Development, Adapted Physical Activity and Mental Retardation, Vermeer A.. Karger, Basel 1990b
- Mann L., Sabatino D. The first review of Special Education. Buttonwood Farms, Philadelphia 1973; 2
- Sackett G. Data collection and analysis methods, Vol. II of Observing behaviour. University Park Press, Baltimore 1978a; 2
- Sackett G. Theory and applications in mental retardation, Vol. I of Observing behaviour. University Park Press, Baltimore 1978b; 2